规则Rules：
标准数独基础上，如果一个宫内有X个涂色格，那么这些格子里要填入1~X。
Classic rules applied. Additionally, in each Box, if there are X colored cells, they must contain number 1~X.
◆例题 Examples
◆在线做Do it by CTC
◆在线做 Do it by Penpa
